The presence of an actress can do many things, not only for the audience, but also for the actors on set.

Kim Soo Hyun spilled that filming wasn′t the same without any actresses on set.

In Be Covert, Be Great, Kim Soo Hyun appears as a North Korean spy who pretends to be a fool in a certain small village. The film does not feature any actresses at all, and Kim Soo Hyun′s co-stars are the decidedly male actors, Park Ki Woong and Lee Hyun Woo.

It was a new experience for Kim Soo Hyun, especially as he had often appeared in sweet romances with top actresses before.

In a recent interview with MBC′s Section TV, which aired on May 5, he said, "Whenever I was on set, it felt cold and chilly."

"You become energized when you′re filming only with male actors, but still I felt empty inside," he said sadly, to laughs from his listeners.

Kim Soo Hyun also compared the differences between his king role of The Sun and the Moon and his role in Be Covert, Be Great.

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